1. European Comission, Towards a smart, efficient and sustainable heating and cooling sector, Memo. (2016). https://ec.europa.eu/commission/presscorner/detail/en/MEMO_16_311.
2. Buildings Performance Institute Europe, Europe ’ s buildings under the microscope, 2011. ISBN: 9789491143014.
3. The Principles of Green Urbanism: Transforming the City for Sustainability;Lehmann,2010
4. BMU, Klimaschutzplan 2050, Klimaschutzplan 2050. (2016) 1–96. 10.1016/j.aqpro.2013.07.003.
5. B. und R. BMU - Bundesministerium für Umwelt, Naturschutz, Klimaschutz Klimaschutz in in Zahlen, (2017) 68.